Qingdao Unique Valves Manufacturing Co., Ltd is a professional manufacturer and exportor in qingdao area of China, we are mainly specialized in producing all kinds of cast iron/ductile iron gate valves, butterfly valves, globe valves, check valves, strainers, ball valves, air valves, etc. Our valves are accordiance with ANSI, MSS, API, DIN, BS, AWWA standards.